Pith Number

pith:PJSHUYBG

pith:2015:PJSHUYBGLN74LY3TUOP3GBCKIL

not attested not anchored not stored refs pending

Perfectly Secure Index Coding

Amin Gohari, Mohammad Mahdi Mojahedian, Mohammad Reza Aref

arxiv:1504.04494 v2 · 2015-04-17 · cs.IT · math.IT

Open paper page JSON Open Graph Bundle Merged state Verified badge What is a Pith Number?

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{PJSHUYBGLN74LY3TUOP3GBCKIL}

Prints a linked badge after your title and injects PDF metadata. Compiles on arXiv. Learn more · Embed verified badge

Record completeness

1 Bitcoin timestamp

2 Internet Archive

3 Author claim open · sign in to claim

4 Citations open

5 Replications open

✓ Portable graph bundle live · download bundle · merged state

The bundle contains the canonical record plus signed events. A mirror can host it anywhere and recompute the same current state with the deterministic merge algorithm.

Receipt and verification

First computed	2026-05-18T00:58:35.800565Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

7a647a60265b7fc5e373a39fb3044a42eaf7abb942c5455f6044e277d43c3789

Aliases

arxiv: 1504.04494 · arxiv_version: 1504.04494v2 · doi: 10.48550/arxiv.1504.04494 · pith_short_12: PJSHUYBGLN74 · pith_short_16: PJSHUYBGLN74LY3T · pith_short_8: PJSHUYBG

Agent API

Resolver JSON Graph JSON Events JSON Schema Signing key

Verify this Pith Number yourself

curl -sH 'Accept: application/ld+json' https://pith.science/pith/PJSHUYBGLN74LY3TUOP3GBCKIL \
  | jq -c '.canonical_record' \
  | python3 -c "import sys,json,hashlib; b=json.dumps(json.loads(sys.stdin.read()), sort_keys=True, separators=(',',':'), ensure_ascii=False).encode(); print(hashlib.sha256(b).hexdigest())"
# expect: 7a647a60265b7fc5e373a39fb3044a42eaf7abb942c5455f6044e277d43c3789

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "e799aef9ab1c7128e724d9d6c85f4da02e97c603e6784a31e878b2473e571df4",
    "cross_cats_sorted": [
      "math.IT"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.IT",
    "submitted_at": "2015-04-17T12:42:10Z",
    "title_canon_sha256": "c3c1ebd9585863de81e787377fc36de82bcb5f1eb3c1396084b4230b84186c07"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1504.04494",
    "kind": "arxiv",
    "version": 2
  }
}